/* ============================================================
   TrueEntropy - Quantum Design System
   Powered by QuBitLang
   ============================================================ */

/* --- Design Tokens --- */
:root {
  /* Primary */
  --quantum-blue: #0EA5E9;
  --quantum-blue-light: #38BDF8;
  --quantum-blue-dark: #0284C7;
  --entropy-violet: #8B5CF6;
  --entropy-violet-light: #A78BFA;
  --entropy-violet-dark: #7C3AED;

  /* Neutrals */
  --void-black: #020617;
  --surface-1: #0F172A;
  --surface-2: #1E293B;
  --surface-3: #334155;
  --photon-white: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-tertiary: #64748B;

  /* Status */
  --success: #22C55E;
  --warning: #F59E0B;
  --error: #EF4444;

  /* Gradients */
  --gradient-quantum: linear-gradient(135deg, var(--quantum-blue), var(--entropy-violet));
  --gradient-subtle: linear-gradient(135deg, rgba(14,165,233,0.15), rgba(139,92,246,0.15));
  --gradient-dark: linear-gradient(180deg, var(--void-black), var(--surface-1));
  --gradient-glow: radial-gradient(ellipse at 50% 0%, rgba(14,165,233,0.12) 0%, transparent 60%);

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;

  /* Spacing */
  --section-pad: clamp(4rem, 8vw, 8rem);
  --container-max: 1200px;
  --container-narrow: 800px;

  /* Borders */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Transitions */
  --ease-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --duration-slow: 400ms;

  /* Shadows */
  --glow-blue: 0 0 40px rgba(14, 165, 233, 0.15);
  --glow-violet: 0 0 40px rgba(139, 92, 246, 0.15);
  --glow-quantum: 0 0 60px rgba(14, 165, 233, 0.1), 0 0 120px rgba(139, 92, 246, 0.05);
}

/* --- Custom Scrollbar --- */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--surface-1);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--quantum-blue), var(--entropy-violet));
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, var(--quantum-blue-light), var(--entropy-violet-light));
}

::-webkit-scrollbar-corner {
  background: var(--surface-1);
}

/* Firefox */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--quantum-blue) var(--surface-1);
}

/* Selection */
::selection {
  background: rgba(14, 165, 233, 0.3);
  color: #ffffff;
}

/* --- Reset & Base --- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--photon-white);
  background: var(--void-black);
  overflow-x: hidden;
}

a {
  color: var(--quantum-blue);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

a:hover {
  color: var(--quantum-blue-light);
}

img, svg {
  display: block;
  max-width: 100%;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

ul, ol { list-style: none; }

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.display {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
}

h1, .h1 { font-size: clamp(2rem, 4.5vw, 3rem); }
h2, .h2 { font-size: clamp(1.75rem, 3.5vw, 2.25rem); font-weight: 600; letter-spacing: -0.015em; }
h3, .h3 { font-size: clamp(1.25rem, 2.5vw, 1.75rem); font-weight: 600; letter-spacing: -0.01em; }
h4, .h4 { font-size: 1.375rem; font-weight: 500; letter-spacing: 0; }
h5, .h5 { font-size: 1.125rem; font-weight: 500; }

.body-lg { font-size: 1.125rem; line-height: 1.7; }
.body-sm { font-size: 0.875rem; line-height: 1.5; }
.caption { font-size: 0.75rem; font-weight: 500; letter-spacing: 0.04em; text-transform: uppercase; }

.text-gradient {
  background: var(--gradient-quantum);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-secondary { color: var(--text-secondary); }
.text-tertiary { color: var(--text-tertiary); }
.font-mono { font-family: var(--font-mono); }

/* --- Layout --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 2rem);
}

.container-narrow {
  max-width: var(--container-narrow);
}

.section {
  padding: var(--section-pad) 0;
  position: relative;
}

.section-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--quantum-blue);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.section-label::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--quantum-blue);
}

.section-title {
  margin-bottom: 1.25rem;
}

.section-desc {
  color: var(--text-secondary);
  font-size: 1.125rem;
  line-height: 1.7;
  max-width: 640px;
}

.section-desc.centered {
  margin: 0 auto;
}

.text-center { text-align: center; }

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.9375rem;
  transition: all var(--duration-normal) var(--ease-out);
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-quantum);
  color: white;
  box-shadow: 0 1px 2px rgba(0,0,0,0.3), var(--glow-blue);
}

.btn-primary:hover {
  color: white;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(14,165,233,0.3), 0 0 40px rgba(139,92,246,0.15);
}

.btn-primary:active {
  transform: scale(0.98);
}

.btn-secondary {
  background: transparent;
  color: var(--photon-white);
  border: 1px solid var(--surface-3);
}

.btn-secondary:hover {
  color: white;
  border-color: var(--text-secondary);
  background: rgba(255,255,255,0.03);
}

.btn-ghost {
  color: var(--quantum-blue);
  padding: 0.75rem 1rem;
}

.btn-ghost:hover {
  background: rgba(14,165,233,0.08);
  color: var(--quantum-blue-light);
}

.btn-sm {
  padding: 0.5rem 1.25rem;
  font-size: 0.8125rem;
}

.btn-lg {
  padding: 1rem 2.25rem;
  font-size: 1rem;
}

/* --- Navbar --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: 64px;
  display: flex;
  align-items: center;
  transition: all var(--duration-normal) var(--ease-out);
}

.navbar.scrolled {
  background: rgba(2, 6, 23, 0.82);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(51, 65, 85, 0.4);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.25rem;
  color: white;
}

.nav-brand:hover { color: white; }

.nav-brand .brand-icon {
  width: 32px;
  height: 32px;
  background: var(--gradient-quantum);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}

.nav-brand span.brand-true {
  color: var(--quantum-blue);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links a {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.9375rem;
  transition: color var(--duration-fast) var(--ease-out);
}

.nav-links a:hover {
  color: white;
}

.nav-links a.nav-qubitlang {
  color: var(--entropy-violet-light);
}

.nav-links a.nav-qubitlang:hover {
  color: var(--entropy-violet);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav-actions .btn-ghost {
  font-size: 0.875rem;
}

/* Mobile menu toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--photon-white);
  border-radius: 2px;
  transition: all var(--duration-normal) var(--ease-out);
}

/* --- Hero --- */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding-top: 64px;
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 200px;
  background: linear-gradient(to top, var(--void-black), transparent);
  pointer-events: none;
  z-index: 2;
}

#particle-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 3;
  max-width: 900px;
  padding: 0 1.5rem;
}

.hero-headline {
  margin-bottom: 1.5rem;
}

.hero-desc {
  color: var(--text-secondary);
  font-size: 1.125rem;
  line-height: 1.7;
  max-width: 520px;
  margin: 0 auto 2.5rem;
}

.hero-ctas {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 3.5rem;
}

/* Hero Code Card */
.hero-code-card {
  background: var(--surface-1);
  border: 1px solid var(--surface-3);
  border-radius: var(--radius-lg);
  max-width: 600px;
  margin: 0 auto;
  text-align: left;
  overflow: visible;
  box-shadow: 0 25px 50px rgba(0,0,0,0.4), var(--glow-quantum);
  position: relative;
  z-index: 1;
}

.hero-code-card::before {
  content: '';
  position: absolute;
  top: -60px;
  left: -60px;
  right: -60px;
  bottom: -60px;
  background: radial-gradient(ellipse at 50% 50%,
    rgba(139, 92, 246, 0.35) 0%,
    rgba(14, 165, 233, 0.2) 30%,
    rgba(139, 92, 246, 0.1) 50%,
    transparent 70%);
  z-index: -1;
  filter: blur(30px);
  pointer-events: none;
}

.code-card-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  background: rgba(0,0,0,0.3);
  border-bottom: 1px solid var(--surface-3);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.code-card-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.code-card-dot.red { background: #EF4444; }
.code-card-dot.yellow { background: #F59E0B; }
.code-card-dot.green { background: #22C55E; }

.code-card-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-tertiary);
  margin-left: 0.5rem;
}

.code-card-body {
  padding: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.7;
  overflow-x: auto;
}

.code-card-body .code-prompt {
  color: var(--success);
}

.code-card-body .code-cmd {
  color: var(--photon-white);
}

.code-card-body .code-url {
  color: var(--quantum-blue);
}

.code-card-body .code-string {
  color: var(--success);
}

.code-card-body .code-key {
  color: var(--quantum-blue);
}

.code-card-body .code-value {
  color: var(--entropy-violet-light);
}

.code-card-body .code-bool {
  color: var(--warning);
}

.code-card-body .code-number {
  color: var(--entropy-violet-light);
}

.code-card-body .code-bracket {
  color: var(--text-secondary);
}

.code-card-body .code-comment {
  color: var(--text-tertiary);
  font-style: italic;
}

/* --- Hero Trust Bar --- */
.hero-trust-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3rem;
  flex-wrap: wrap;
  margin-top: 3.5rem;
  padding-top: 2rem;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  opacity: 0.7;
  transition: opacity var(--duration-normal) var(--ease-out);
}

.trust-item:hover {
  opacity: 1;
}

.trust-item-label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-tertiary);
  margin-right: 0.125rem;
}

.trust-item-name {
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--photon-white);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* --- Features Light Section --- */
.section.section-light {
  background: #F8FAFC;
  color: #0F172A;
}

.section.section-light .section-label {
  color: var(--quantum-blue-dark);
}

.section.section-light .section-label::before {
  background: var(--quantum-blue-dark);
}

.section.section-light .section-title {
  color: #0F172A;
}

.section.section-light .section-desc {
  color: #475569;
}

/* --- Feature Grid --- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 3rem;
}

.feature-card {
  background: var(--surface-1);
  border: 1px solid var(--surface-2);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all var(--duration-normal) var(--ease-out);
}

.feature-card:hover {
  border-color: var(--surface-3);
  box-shadow: var(--glow-blue);
  transform: translateY(-2px);
}

/* Light-themed feature cards */
.section-light .feature-card {
  background: #ffffff;
  border: 1px solid #E2E8F0;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
}

.section-light .feature-card:hover {
  border-color: #CBD5E1;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08), 0 0 0 1px rgba(14,165,233,0.1);
  transform: translateY(-2px);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  background: var(--gradient-subtle);
  color: var(--quantum-blue);
  font-size: 1.25rem;
}

.section-light .feature-icon {
  background: linear-gradient(135deg, rgba(14,165,233,0.1), rgba(139,92,246,0.1));
}

.feature-card h4 {
  margin-bottom: 0.75rem;
  font-size: 1.125rem;
}

.section-light .feature-card h4 {
  color: #0F172A;
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.6;
}

.section-light .feature-card p {
  color: #475569;
}

/* --- How It Works --- */
.pipeline {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  margin-top: 3.5rem;
  position: relative;
}

.pipeline::before {
  content: '';
  position: absolute;
  top: 44px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: linear-gradient(90deg,
    var(--quantum-blue),
    var(--entropy-violet-light),
    var(--quantum-blue)
  );
  opacity: 0.3;
  z-index: 0;
}

.pipeline-step {
  text-align: center;
  position: relative;
  z-index: 1;
  padding: 0 0.75rem;
}

.pipeline-node {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--surface-1);
  border: 2px solid var(--surface-3);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
  font-size: 1.125rem;
  color: var(--quantum-blue);
  transition: all var(--duration-normal) var(--ease-out);
}

.pipeline-step:hover .pipeline-node {
  border-color: var(--quantum-blue);
  box-shadow: 0 0 20px rgba(14,165,233,0.2);
}

.pipeline-step-num {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--quantum-blue);
  margin-bottom: 0.5rem;
}

.pipeline-step h4 {
  font-size: 0.9375rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.pipeline-step p {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* --- Entropy Counter --- */
.counter-section {
  text-align: center;
  padding: var(--section-pad) 0;
  position: relative;
}

.counter-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-glow);
  pointer-events: none;
}

.counter-value {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700;
  font-family: var(--font-mono);
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

.counter-label {
  font-size: 1.125rem;
  color: var(--text-secondary);
}

.counter-label strong {
  color: var(--entropy-violet-light);
  font-weight: 600;
}

/* --- QuBitLang Showcase --- */
.qubitlang-section {
  background: var(--surface-1);
  border-top: 1px solid var(--surface-2);
  border-bottom: 1px solid var(--surface-2);
}

.qubitlang-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  margin-top: 3rem;
}

.qubitlang-info h3 {
  margin-bottom: 1.25rem;
}

.qubitlang-info p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.qubitlang-features {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
}

.qubitlang-feature {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.qubitlang-feature-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  color: var(--entropy-violet);
  margin-top: 2px;
}

.qubitlang-feature-text {
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

.qubitlang-feature-text strong {
  color: var(--photon-white);
}

.qubitlang-code {
  background: var(--void-black);
  border: 1px solid var(--surface-3);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.qubitlang-code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.25rem;
  border-bottom: 1px solid var(--surface-3);
  background: rgba(0,0,0,0.3);
}

.qubitlang-code-filename {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-tertiary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.qubitlang-code-filename .dot {
  width: 8px;
  height: 8px;
  background: var(--entropy-violet);
  border-radius: 50%;
}

.qubitlang-code-lang {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--entropy-violet-light);
  background: rgba(139,92,246,0.1);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  letter-spacing: 0.05em;
}

.qubitlang-code-body {
  padding: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.8;
  overflow-x: auto;
}

.ql-keyword { color: var(--quantum-blue); font-weight: 600; }
.ql-function { color: var(--entropy-violet-light); }
.ql-gate { color: #F472B6; font-weight: 600; }
.ql-variable { color: var(--photon-white); }
.ql-comment { color: var(--text-tertiary); font-style: italic; }
.ql-operator { color: var(--text-secondary); }
.ql-number { color: var(--warning); }
.ql-arrow { color: var(--success); }

/* --- Pricing --- */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  margin-top: 3rem;
}

.pricing-card {
  background: var(--surface-1);
  border: 1px solid var(--surface-2);
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  transition: all var(--duration-normal) var(--ease-out);
}

.pricing-card:hover {
  border-color: var(--surface-3);
  transform: translateY(-2px);
}

.pricing-card.featured {
  border-color: var(--quantum-blue);
  box-shadow: 0 0 40px rgba(14,165,233,0.1);
  position: relative;
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-quantum);
  color: white;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.3rem 1rem;
  border-radius: 20px;
  white-space: nowrap;
}

.pricing-tier {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--quantum-blue);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
}

.pricing-price {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
  line-height: 1;
}

.pricing-price .currency {
  font-size: 1.25rem;
  color: var(--text-secondary);
  vertical-align: top;
  line-height: 2;
}

.pricing-price .period {
  font-size: 0.875rem;
  color: var(--text-tertiary);
  font-weight: 400;
}

.pricing-desc {
  color: var(--text-secondary);
  font-size: 0.8125rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--surface-2);
}

.pricing-features {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.pricing-feature {
  display: flex;
  align-items: flex-start;
  gap: 0.625rem;
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.pricing-check {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  color: var(--success);
  margin-top: 2px;
}

.pricing-card .btn {
  width: 100%;
}

/* --- Code Tabs --- */
.code-tabs {
  margin-top: 3rem;
}

.code-tab-nav {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--surface-3);
}

.code-tab-btn {
  padding: 0.75rem 1.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-tertiary);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: all var(--duration-fast) var(--ease-out);
  font-family: var(--font-mono);
}

.code-tab-btn:hover {
  color: var(--text-secondary);
}

.code-tab-btn.active {
  color: var(--quantum-blue);
  border-bottom-color: var(--quantum-blue);
}

.code-tab-content {
  background: var(--surface-1);
  border: 1px solid var(--surface-2);
  border-top: none;
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  padding: 1.5rem;
}

.code-tab-panel {
  display: none;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.8;
  overflow-x: auto;
}

.code-tab-panel.active {
  display: block;
}

/* --- Final CTA --- */
.cta-section {
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-quantum);
}

.cta-section::after {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 300px;
  background: radial-gradient(ellipse, rgba(14,165,233,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.cta-content {
  position: relative;
  z-index: 1;
}

.cta-section h2 {
  margin-bottom: 1rem;
}

.cta-section p {
  color: var(--text-secondary);
  font-size: 1.125rem;
  max-width: 500px;
  margin: 0 auto 2rem;
  line-height: 1.7;
}

.cta-section .cta-powered {
  margin-top: 2rem;
  margin-bottom: 0;
  font-size: 0.8125rem;
  color: var(--text-tertiary);
}

.cta-powered strong {
  color: var(--entropy-violet-light);
  font-weight: 600;
}

/* --- Blog Article Body --- */
.blog-article-body p {
  margin-bottom: 1.5rem;
}

.blog-article-body ul,
.blog-article-body ol {
  margin-bottom: 1.5rem;
}

.blog-article-body li {
  margin-bottom: 0.5rem;
}

.blog-article-body h2 {
  margin-top: 2.5rem;
  margin-bottom: 1rem;
}

.blog-article-body h3 {
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

/* --- Footer --- */
.footer {
  border-top: 1px solid var(--surface-2);
  padding: 4rem 0 2rem;
  background: var(--surface-1);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  margin-top: 1rem;
  max-width: 280px;
  line-height: 1.6;
}

.footer-powered {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--entropy-violet-light);
  background: rgba(139,92,246,0.08);
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(139,92,246,0.15);
}

.footer-col h5 {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
}

.footer-col a {
  display: block;
  color: var(--text-tertiary);
  font-size: 0.875rem;
  padding: 0.3rem 0;
  transition: color var(--duration-fast) var(--ease-out);
}

.footer-col a:hover {
  color: var(--photon-white);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 2rem;
  border-top: 1px solid var(--surface-2);
  font-size: 0.8125rem;
  color: var(--text-tertiary);
}

.footer-socials {
  display: flex;
  gap: 1rem;
}

.footer-socials a {
  color: var(--text-tertiary);
  transition: color var(--duration-fast) var(--ease-out);
}

.footer-socials a:hover {
  color: var(--photon-white);
}

/* --- Scroll Reveal Animation --- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }

/* --- Dividers & Accents --- */
.section-divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--surface-3), transparent);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .pipeline {
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
  }

  .pipeline::before {
    display: none;
  }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-actions .btn-ghost { display: none; }
  .nav-toggle { display: flex; }

  /* Mobile menu */
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(2, 6, 23, 0.96);
    backdrop-filter: blur(20px);
    padding: 1.5rem;
    gap: 0.5rem;
    border-bottom: 1px solid var(--surface-3);
  }

  .nav-links.open a {
    padding: 0.75rem 0;
    font-size: 1rem;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .pipeline {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .pipeline-step {
    display: grid;
    grid-template-columns: 56px 1fr;
    text-align: left;
    gap: 1rem;
    align-items: center;
  }

  .pipeline-node {
    margin: 0;
  }

  .qubitlang-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }

  .footer-brand {
    grid-column: span 2;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  .hero-code-card {
    margin: 0 -0.5rem;
  }

  .hero-trust-bar {
    gap: 1.5rem;
    margin-top: 2.5rem;
  }

  .grid-2, .grid-3 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-brand {
    grid-column: span 1;
  }
}

/* --- Inner Page Hero --- */
.hero-inner {
  padding-top: calc(64px + var(--section-pad));
  padding-bottom: 3rem;
}

/* --- Endpoint Example --- */
.endpoint-example {
  display: block;
  margin-top: 1rem;
  padding: 0.5rem 0.75rem;
  background: var(--void-black);
  border: 1px solid var(--surface-3);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--quantum-blue);
}

/* --- Pipeline Horizontal (compact) --- */
.pipeline-horizontal {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.5rem;
}

.pipeline-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.4rem 0.75rem;
  background: var(--surface-1);
  border: 1px solid var(--surface-3);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--text-secondary);
  white-space: nowrap;
}

.pipeline-chip.active {
  border-color: var(--quantum-blue);
  color: var(--quantum-blue);
  background: rgba(14,165,233,0.06);
}

.pipeline-arrow {
  color: var(--text-tertiary);
  font-size: 0.75rem;
}

/* --- Pipeline Detail (vertical) --- */
.pipeline-detail {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
  padding-left: 3rem;
}

.pipeline-detail::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 18px;
  width: 2px;
  background: linear-gradient(180deg, var(--quantum-blue), var(--entropy-violet), var(--quantum-blue));
  opacity: 0.2;
}

.pipeline-detail-step {
  display: flex;
  gap: 1.25rem;
  padding: 1.5rem 0;
  position: relative;
}

.pipeline-detail-step::before {
  content: '';
  position: absolute;
  left: -2.125rem;
  top: 1.85rem;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--quantum-blue);
  border: 2px solid var(--void-black);
  box-shadow: 0 0 8px rgba(14,165,233,0.3);
}

.pipeline-detail-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--quantum-blue);
  min-width: 24px;
  padding-top: 2px;
}

.pipeline-detail-content h4 {
  margin-bottom: 0.5rem;
  font-size: 1.0625rem;
}

.pipeline-detail-content p {
  font-size: 0.9375rem;
  line-height: 1.65;
}

.pipeline-detail-content code {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--entropy-violet-light);
  background: rgba(139,92,246,0.08);
  padding: 0.1rem 0.4rem;
  border-radius: 3px;
}

/* --- Comparison Grid --- */
.comparison-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

/* --- Stat Row --- */
.stat-row {
  display: flex;
  gap: 2rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  font-family: var(--font-mono);
}

.stat-label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* --- QuBitLang Hero Badge --- */
.ql-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1.25rem;
  background: rgba(139,92,246,0.08);
  border: 1px solid rgba(139,92,246,0.2);
  border-radius: 100px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--entropy-violet-light);
}

/* --- Compliance Grid --- */
.compliance-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  margin-top: 2.5rem;
}

.compliance-card {
  background: var(--surface-1);
  border: 1px solid var(--surface-2);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  text-align: center;
  transition: all var(--duration-normal) var(--ease-out);
}

.compliance-card:hover {
  border-color: var(--surface-3);
  transform: translateY(-2px);
}

.compliance-icon {
  margin-bottom: 1rem;
}

.compliance-card h4 {
  margin-bottom: 0.75rem;
  font-size: 1rem;
}

.compliance-card p {
  color: var(--text-secondary);
  font-size: 0.8125rem;
  line-height: 1.6;
}

/* --- Portability Grid --- */
.portability-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.portability-card {
  background: var(--surface-1);
  border: 1px solid var(--surface-2);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  position: relative;
  transition: all var(--duration-normal) var(--ease-out);
}

.portability-card:hover {
  border-color: var(--surface-3);
}

.portability-card.active {
  border-color: var(--quantum-blue);
  box-shadow: var(--glow-blue);
}

.portability-status {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  margin-bottom: 1rem;
  background: rgba(34,197,94,0.12);
  color: var(--success);
}

.portability-status.upcoming {
  background: rgba(100,116,139,0.12);
  color: var(--text-tertiary);
}

.portability-card h4 {
  margin-bottom: 0.5rem;
}

/* --- FAQ --- */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.faq-item {
  border-bottom: 1px solid var(--surface-2);
}

.faq-question {
  padding: 1.25rem 0;
  font-weight: 600;
  font-size: 1.0625rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--photon-white);
  transition: color var(--duration-fast) var(--ease-out);
}

.faq-question:hover {
  color: var(--quantum-blue);
}

.faq-question::after {
  content: '+';
  font-size: 1.25rem;
  font-weight: 300;
  color: var(--text-tertiary);
  transition: transform var(--duration-normal) var(--ease-out);
}

.faq-item[open] .faq-question::after {
  content: '−';
  color: var(--quantum-blue);
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-answer {
  padding-bottom: 1.25rem;
}

.faq-answer p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.7;
}

.faq-answer code {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  background: var(--surface-2);
  padding: 0.15rem 0.4rem;
  border-radius: 3px;
}

/* --- About Card --- */
.about-card {
  background: var(--surface-1);
  border: 1px solid var(--surface-2);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  text-align: center;
}

.about-card-header {
  margin-bottom: 1.5rem;
}

/* --- Timeline --- */
.timeline {
  position: relative;
  padding-left: 2.5rem;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--quantum-blue), var(--entropy-violet));
  opacity: 0.2;
}

.timeline-item {
  position: relative;
  padding-bottom: 3rem;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-marker {
  position: absolute;
  left: -2.25rem;
  top: 4px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--quantum-blue);
  box-shadow: 0 0 8px rgba(14,165,233,0.3);
}

.timeline-content h4 {
  margin-bottom: 0.75rem;
  font-size: 1.1875rem;
}

.timeline-content p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.8;
  max-width: 42rem;
}

/* --- Contact Form --- */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 0.75rem 1rem;
  background: var(--surface-1);
  border: 1px solid var(--surface-3);
  border-radius: var(--radius-md);
  color: var(--photon-white);
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  transition: border-color var(--duration-fast) var(--ease-out), box-shadow var(--duration-fast) var(--ease-out);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-tertiary);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--quantum-blue);
  box-shadow: 0 0 0 3px rgba(14,165,233,0.1);
}

.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2394A3B8' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  padding-right: 2.5rem;
}

.form-group select option {
  background: var(--surface-1);
  color: var(--photon-white);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

/* --- Contact Info --- */
.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-bottom: 1rem;
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.contact-info-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-subtle);
  border-radius: var(--radius-md);
  color: var(--quantum-blue);
  flex-shrink: 0;
}

.contact-info-item h5 {
  font-size: 0.875rem;
  margin-bottom: 0.25rem;
}

.contact-info-item a {
  font-size: 0.875rem;
}

/* --- Page-specific responsive --- */
@media (max-width: 1024px) {
  .compliance-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .portability-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .pricing-grid[style*="repeat(5"] {
    grid-template-columns: repeat(3, 1fr) !important;
  }

  .comparison-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .compliance-grid {
    grid-template-columns: 1fr;
  }

  .portability-grid {
    grid-template-columns: 1fr;
  }

  .pricing-grid[style*="repeat(5"] {
    grid-template-columns: 1fr !important;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
  }

  .pipeline-horizontal {
    gap: 0.35rem;
  }

  .pipeline-chip {
    font-size: 0.625rem;
    padding: 0.3rem 0.5rem;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .stat-row {
    gap: 1.25rem;
  }

  .stat-value {
    font-size: 1.5rem;
  }
}

/* --- Legal Pages --- */
.legal-content {
  margin-top: 2.5rem;
}

.legal-content h2 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--surface-2);
}

.legal-content h2:first-of-type {
  border-top: none;
  padding-top: 0;
  margin-top: 0;
}

.legal-content h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

.legal-content p {
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 1rem;
}

.legal-content ul {
  margin-bottom: 1rem;
  padding-left: 1.25rem;
}

.legal-content ul li {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 0.5rem;
  list-style: disc;
}

.legal-content ul li strong {
  color: var(--photon-white);
}

.legal-content code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--surface-2);
  padding: 0.15rem 0.4rem;
  border-radius: 3px;
}

.legal-content a {
  color: var(--quantum-blue);
}

.legal-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.25rem 0;
  font-size: 0.875rem;
}

.legal-table th,
.legal-table td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--surface-2);
}

.legal-table th {
  background: var(--surface-1);
  color: var(--photon-white);
  font-weight: 600;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.legal-table td {
  color: var(--text-secondary);
}

.legal-footer {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--surface-2);
  text-align: center;
}

.legal-footer p {
  color: var(--text-tertiary);
  font-size: 0.8125rem;
  margin-bottom: 0.25rem;
}

/* --- Dashboard Layout --- */
.dash-layout {
  min-height: 100vh;
}

.dash-sidebar {
  background: var(--surface-1);
  border-right: 1px solid var(--surface-2);
  padding: 1.25rem 0;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 240px;
  z-index: 100;
}

.dash-sidebar-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0 1.25rem 1.25rem;
  border-bottom: 1px solid var(--surface-2);
  font-weight: 700;
  font-size: 1.0625rem;
  color: white;
}

.dash-sidebar-brand .brand-icon {
  width: 28px;
  height: 28px;
  background: var(--gradient-quantum);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8125rem;
}

.dash-sidebar-brand .brand-true { color: var(--quantum-blue); }

.dash-nav {
  flex: 1;
  padding: 1rem 0;
  overflow-y: auto;
}

.dash-nav-section {
  padding: 0 0.75rem;
  margin-bottom: 0.5rem;
}

.dash-nav-label {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-tertiary);
  padding: 0.5rem;
  margin-top: 0.5rem;
}

.dash-nav-item {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  transition: all var(--duration-fast) var(--ease-out);
  text-decoration: none;
}

.dash-nav-item:hover {
  color: var(--photon-white);
  background: rgba(255,255,255,0.03);
}

.dash-nav-item.active {
  color: var(--photon-white);
  background: rgba(14,165,233,0.08);
  border-left: 2px solid var(--quantum-blue);
}

.dash-nav-item i, .dash-nav-item svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.dash-sidebar-footer {
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--surface-2);
}

.dash-main {
  margin-left: 240px;
  padding: 2rem;
  min-height: 100vh;
}

.dash-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
}

.dash-greeting h1 {
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.dash-greeting p {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-top: 0.25rem;
}

.dash-plan-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.375rem 0.875rem;
  background: rgba(14,165,233,0.08);
  border: 1px solid rgba(14,165,233,0.2);
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--quantum-blue);
}

.dash-user-menu {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.dash-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--gradient-quantum);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.8125rem;
  color: white;
}

/* --- Dashboard Cards --- */
.dash-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.dash-stat-card {
  background: var(--surface-1);
  border: 1px solid var(--surface-2);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
}

.dash-stat-label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.5rem;
}

.dash-stat-value {
  font-size: 1.75rem;
  font-weight: 700;
  font-family: var(--font-mono);
  letter-spacing: -0.02em;
}

.dash-stat-trend {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.75rem;
  font-weight: 500;
  margin-top: 0.375rem;
}

.dash-stat-trend.up { color: var(--success); }
.dash-stat-trend.down { color: var(--error); }

.dash-row {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.dash-card {
  background: var(--surface-1);
  border: 1px solid var(--surface-2);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
}

.dash-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.dash-card-title {
  font-size: 0.9375rem;
  font-weight: 600;
}

.dash-card-action {
  font-size: 0.75rem;
  color: var(--quantum-blue);
  font-weight: 500;
}

/* Usage bar */
.dash-usage-bar {
  height: 8px;
  background: var(--surface-3);
  border-radius: 4px;
  overflow: hidden;
  margin: 1rem 0 0.5rem;
}

.dash-usage-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 1s var(--ease-out);
}

.dash-usage-fill.green { background: var(--success); }
.dash-usage-fill.amber { background: var(--warning); }
.dash-usage-fill.red { background: var(--error); }
.dash-usage-fill.blue { background: var(--quantum-blue); }

/* Status indicators */
.dash-status-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0;
  border-bottom: 1px solid rgba(51,65,85,0.3);
}

.dash-status-item:last-child { border-bottom: none; }

.dash-status-name {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
}

.dash-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.dash-status-dot.online { background: var(--success); box-shadow: 0 0 6px rgba(34,197,94,0.4); }
.dash-status-dot.degraded { background: var(--warning); }
.dash-status-dot.offline { background: var(--error); }

.dash-status-label {
  font-size: 0.75rem;
  color: var(--text-tertiary);
}

/* Chart placeholder */
.dash-chart {
  height: 200px;
  background: linear-gradient(180deg, rgba(14,165,233,0.05), transparent);
  border-radius: var(--radius-md);
  display: flex;
  align-items: flex-end;
  justify-content: space-around;
  padding: 1rem;
  gap: 0.5rem;
}

.dash-chart-bar {
  width: 100%;
  background: var(--quantum-blue);
  border-radius: 3px 3px 0 0;
  min-height: 8px;
  opacity: 0.7;
  transition: opacity var(--duration-fast) var(--ease-out);
}

.dash-chart-bar:hover { opacity: 1; }

/* Activity log */
.dash-log {
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.dash-log-row {
  display: grid;
  grid-template-columns: 60px 1.5fr 50px 50px 70px;
  gap: 0.75rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid rgba(51,65,85,0.2);
  color: var(--text-secondary);
  align-items: center;
}

.dash-log-row:first-child {
  color: var(--text-tertiary);
  font-weight: 600;
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.dash-log-status { font-weight: 600; }
.dash-log-status.s200 { color: var(--success); }
.dash-log-status.s400 { color: var(--warning); }
.dash-log-status.s500 { color: var(--error); }

/* API Key cards */
.dash-key-card {
  background: var(--surface-1);
  border: 1px solid var(--surface-2);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-bottom: 1rem;
}

.dash-key-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.dash-key-name {
  font-weight: 600;
  font-size: 0.9375rem;
}

.dash-key-status {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  background: rgba(34,197,94,0.1);
  color: var(--success);
}

.dash-key-value {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--text-secondary);
  background: var(--void-black);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--surface-3);
  margin-bottom: 0.75rem;
}

.dash-key-meta {
  display: flex;
  gap: 2rem;
  font-size: 0.75rem;
  color: var(--text-tertiary);
  margin-bottom: 1rem;
}

.dash-key-actions {
  display: flex;
  gap: 0.5rem;
}

/* --- Dashboard Responsive --- */
@media (max-width: 1024px) {
  .dash-stats {
    grid-template-columns: repeat(2, 1fr);
  }
  .dash-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .dash-sidebar {
    display: none;
  }
  .dash-main {
    margin-left: 0;
    padding: 1rem;
  }
  .dash-stats {
    grid-template-columns: 1fr;
  }
  .dash-log-row {
    grid-template-columns: 50px 1fr 40px 40px;
  }
  .dash-log-row > *:last-child {
    display: none;
  }
}

/* --- Docs Layout --- */
.docs-layout {
  min-height: 100vh;
}

.docs-sidebar {
  background: var(--surface-1);
  border-right: 1px solid var(--surface-2);
  padding: 1.25rem 0 0;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 260px;
  z-index: 100;
  overflow-y: auto;
}

.docs-main {
  margin-left: 260px;
  display: grid;
  grid-template-columns: 1fr 200px;
  gap: 2rem;
  padding: 2rem;
  max-width: 1100px;
}

.docs-breadcrumb {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  color: var(--text-tertiary);
}

.docs-breadcrumb a { color: var(--text-secondary); }
.docs-breadcrumb a:hover { color: var(--quantum-blue); }

.docs-article {
  min-width: 0;
}

.docs-article h1 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.docs-lead {
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--surface-2);
}

.docs-article h2 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.docs-article p {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 1rem;
}

.docs-article strong {
  color: var(--photon-white);
}

.docs-article a {
  color: var(--quantum-blue);
}

/* Steps */
.docs-step {
  display: flex;
  gap: 1.25rem;
  margin-bottom: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--surface-2);
}

.docs-step-num {
  width: 36px;
  height: 36px;
  min-width: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-quantum);
  border-radius: 50%;
  font-weight: 700;
  font-size: 0.875rem;
  color: white;
}

.docs-step-content {
  flex: 1;
  min-width: 0;
}

.docs-time {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-tertiary);
  background: var(--surface-2);
  padding: 0.15rem 0.5rem;
  border-radius: 100px;
  margin-left: 0.5rem;
  vertical-align: middle;
}

/* Docs Tabs */
.docs-tabs {
  margin: 1.25rem 0;
}

.docs-tab-nav {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--surface-2);
}

.docs-tab-btn {
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-tertiary);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
  font-family: var(--font-sans);
}

.docs-tab-btn:hover { color: var(--text-secondary); }
.docs-tab-btn.active {
  color: var(--quantum-blue);
  border-bottom-color: var(--quantum-blue);
}

.docs-tab-panel {
  display: none;
  padding-top: 0.75rem;
}

.docs-tab-panel.active { display: block; }

/* What's Next */
.docs-next {
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--surface-2);
}

.docs-next h2 {
  margin-bottom: 1.25rem;
}

.docs-next-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.docs-next-card {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1rem;
  background: var(--surface-1);
  border: 1px solid var(--surface-2);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: all var(--duration-fast) var(--ease-out);
}

.docs-next-card:hover {
  border-color: var(--surface-3);
  background: var(--surface-2);
}

.docs-next-card strong {
  color: var(--photon-white);
  display: block;
  margin-bottom: 0.25rem;
  font-size: 0.875rem;
}

/* Pagination */
.docs-pagination {
  display: flex;
  justify-content: space-between;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--surface-2);
}

.docs-pagination-link {
  text-decoration: none;
}

.docs-pagination-label {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-tertiary);
  display: block;
  margin-bottom: 0.25rem;
}

.docs-pagination-title {
  font-weight: 600;
  color: var(--quantum-blue);
}

/* TOC */
.docs-toc {
  position: sticky;
  top: 2rem;
  align-self: start;
}

.docs-toc-title {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-tertiary);
  margin-bottom: 0.75rem;
}

.docs-toc-link {
  display: block;
  font-size: 0.8125rem;
  color: var(--text-tertiary);
  padding: 0.3rem 0;
  padding-left: 0.75rem;
  border-left: 2px solid var(--surface-2);
  text-decoration: none;
  transition: all var(--duration-fast) var(--ease-out);
}

.docs-toc-link:hover { color: var(--text-secondary); }
.docs-toc-link.active {
  color: var(--quantum-blue);
  border-left-color: var(--quantum-blue);
}

/* API Reference specific */
.docs-endpoint-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 1.125rem;
  font-weight: 600;
}

.docs-method {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
}

.docs-method.get { background: rgba(34,197,94,0.12); color: var(--success); }
.docs-method.post { background: rgba(245,158,11,0.12); color: var(--warning); }

.docs-param-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.25rem 0;
  font-size: 0.8125rem;
}

.docs-param-table th {
  text-align: left;
  padding: 0.625rem 0.75rem;
  font-weight: 600;
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-tertiary);
  border-bottom: 1px solid var(--surface-2);
  background: var(--surface-1);
}

.docs-param-table td {
  padding: 0.625rem 0.75rem;
  border-bottom: 1px solid rgba(51,65,85,0.2);
  color: var(--text-secondary);
}

.docs-param-table td:first-child {
  font-family: var(--font-mono);
  font-weight: 500;
  color: var(--photon-white);
}

.docs-param-required {
  font-size: 0.625rem;
  font-weight: 700;
  padding: 0.1rem 0.35rem;
  border-radius: 3px;
  text-transform: uppercase;
}

.docs-param-required.yes { background: rgba(239,68,68,0.12); color: var(--error); }
.docs-param-required.no { background: rgba(100,116,139,0.12); color: var(--text-tertiary); }

/* Certificate Verify */
.verify-card {
  background: var(--surface-1);
  border: 1px solid var(--surface-2);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  max-width: 600px;
  margin: 0 auto;
}

.verify-status {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem;
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
}

.verify-status.valid { background: rgba(34,197,94,0.08); border: 1px solid rgba(34,197,94,0.2); }
.verify-status.invalid { background: rgba(239,68,68,0.08); border: 1px solid rgba(239,68,68,0.2); }

.verify-field {
  display: flex;
  justify-content: space-between;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--surface-2);
  font-size: 0.875rem;
}

.verify-field:last-child { border-bottom: none; }

.verify-field-label {
  color: var(--text-tertiary);
  font-weight: 500;
}

.verify-field-value {
  color: var(--photon-white);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  text-align: right;
  max-width: 60%;
  word-break: break-all;
}

/* Docs responsive */
@media (max-width: 1024px) {
  .docs-main {
    grid-template-columns: 1fr;
  }
  .docs-toc { display: none; }
  .docs-next-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .docs-sidebar { display: none; }
  .docs-main { margin-left: 0; padding: 1rem; }
  .docs-step { flex-direction: column; gap: 0.75rem; }
}

/* --- Reduced Motion --- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

  #particle-canvas {
    display: none;
  }
}